Tortoiseshell can refer to:

• tortoiseshell material, made primarily from the shell of the Hawksbill turtle
• a Tortoiseshell cat
• a pattern used in clothing and jewellery
• the Small Tortoiseshell, a European butterfly
• the California Tortoiseshell, a North American butterfly
• "Tortoiseshell", a song by The Boo Radleys which appeared on their EP Every Heaven

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